Keep a master database of all faces using the app AND constantly scan everything the camera “sees” while running in the background

Keep the users’ biometric data in my master database – create cross references of who the user associates with through matching biometric facial scans, their GPS locations, and who they have in their contact list (Apple already allows app access to GPS position and contact lists BTW)

Profit in a very serious long-term way

Read Apple’s statement again. The biometric data points are not generated and deleted with every use. They are stored. On the local phone.

That stored information will be shared with third-party apps.

Biometric scans are a mathematical algorithm. Your facial patterns create an identifier unique to you. There’s no changing it. Once your unique biological mathematical algorithm is out in the open, there’s absolutely no way to put that genie back in the bottle. The last cornerstone of individual security will turn to dust.